Wenger travelled to Belarus with a young squad and gave a first senior start to Joe Willock and also named Ainsley Maitland-Niles and forward Reiss Nelson in his XI.
Walcott put Arsenal ahead with a quickfire brace, before Rob Holding made it 3-0.
Borisov pulled one back within two minutes, Ivanic heading in Alexei Rios’ cross.
Three minutes into the second half, Giroud had his landmark goal, when the North London side were awarded a penalty.
Arsenal top Group H with six points from two games. SHARE THIS STORY USING ANY OF THE BUTTON BELOW ⬇ PLACE YOUR TEXT ADVERT BELOW ⬇⬇⬇
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